- Giant Fibrovascular Polyp of the Esophagus: A Case Report
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Shim YM, Lee KS, Lim JH, Kim JS, Ryoo JW, Han JH
- KMID: 1831096
- J Korean Radiol Soc.
- 1995 Aug;33(2):243-246.
Fibrovascular polyp of the esophagus is a rare and benign pedunculated intraluminal tumor. The tumor consists of varying amount of vascular fibrous and adipose tissue that arises in the submucosa... -
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- Cavernous Hemangioma of the Adrenal Gland: A Case Report
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Park ED, Cho JM, You JJ, Choi DS, Ryoo JW
- KMID: 1582242
- J Korean Radiol Soc.
- 2005 Apr;52(4):247-249.
- doi: 10.3348/jkrs.2005.52.4.247
Hemangiomas are rare benign tumors of the adrenal gland. We report here on the CT findings of a cavernous hemangioma of the right adrenal gland. The CT revealed a well-delineated... -
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- Alternating Hemispheric Seizures with Migrating Brain Lesions in MELAS Syndrome
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Moon SY, Hong SB, Song YM, Ryoo JW, Seo DW
- KMID: 2333387
- J Korean Epilepsy Soc.
- 2002 Jun;6(1):73-76.
Epileptic seizure is a frequent sign of mitochondrial encephalopathies with lactic acidosis and stroke-like episodes (MELAS). We report a 21-year-old woman with MELAS who had alternating hemispheric seizures. Her brain... -
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- GB Opacification at CT by Contrast Media Injected a Few Hours Earlier in Adult with Normal Renal Function
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Kim SH, Yeon KM, Ryoo JW
- KMID: 2201737
- J Korean Radiol Soc.
- 1994 Jul;31(1):135-138.
PURPOSE: To evaluate the incidence of GB opacification, seen at CT, by contrast media injected a few hours earlier in adults with normal renal function and to assess the clinical significance... -
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- Diffusion-Weighted MR Imaging of Unusual White Matter Lesion in a Patient with Menkes Disease
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Lee ES, Ryoo JW, Choi DS, Cho JM, Kwon SH, Shin HS
- KMID: 753871
- Korean J Radiol.
- 2007 Feb;8(1):82-85.
- doi: 10.3348/kjr.2007.8.1.82
We report here on the diffusion-weighted imaging of unusual white matter lesions in a case of Menkes disease. On the initial MR imaging, the white matter lesions were localized in... -
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- Analysis of fMRI Signal Using Independent Component Analysis
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Moon CH, Na DG, Park HW, Ryoo JW, Rhee EJ, Byun HS
- KMID: 2000099
- J Korean Soc Magn Reson Med.
- 1999 Jun;3(2):188-196.
The fMRI signals are composed of many various signals. It is very difficult to find the accurate parameter for the model of fMRI signal containing only neural activity, though we... -
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- A Study of Optimal SOAmin for Motor and Language Tasks in Event-related fMRl using Stochastic Design
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Moon CH, Ryoo JW, Na DG, Rhee EJ, Byun HS
- KMID: 1595666
- J Korean Soc Magn Reson Med.
- 2002 Jun;6(1):28-34.
PURPOSE: The minimum stimulus onset asynchronoy(SOAmin) is one of important experimental parameters for an event-related fMRl experiment designed with the stochastic stimulus. In this study, the most efficient SOAmin is... -
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- Dural Arteriovenous Fistula Presenting with Cerebral Infarction
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Hwang IC, Park IS, Choi DS, Ryoo JW
- KMID: 1956265
- J Korean Neurosurg Soc.
- 2007 Jun;41(6):411-413.
We report on a diabetic 52-year-old man who complained ocular floating sensation, headache and dizziness, in whom a left parieto-occipital dural ateriovenous fistulas (DAVFs), fed by bilateral superficial temporal arteries... -
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- Fast Spin-Echo T2-Weighted MR Imaging of Tongue Cancer: the Value of Fat-suppression
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Kim ZB, Na DG, Ryoo JW, Kim KA, Byun HS, Baek CW, Son YI
- KMID: 2200463
- J Korean Radiol Soc.
- 2000 Dec;43(6):683-689.
- doi: 10.3348/jkrs.2000.43.6.683
PURPOSE: To compare the diagnostic efficacy of fast spin-echo (FSE) T2-weighted MR imaging with and without fat suppression. MATERIALS AND METHODS: Twelve patients (7 men and 5 women; mean age,... -
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- Functional MRI of Multilingual Subjects
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Cho JM, Ryoo JW, Choi DS, Shin TB, Chung SH, Kim JE, Han H, Kim SS, Jeon YH
- KMID: 1471262
- J Korean Soc Radiol.
- 2009 Dec;61(6):351-358.
- doi: 10.3348/jksr.2009.61.6.351
PURPOSE: To evaluate brain activation areas during the processing of languages in multilingual volunteers by functional MRI and to examine the differences between the mother and foreign languages. MATERIALS AND METHODS:... -
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- Necrotizing Pneumonia: CT Findings & its Clinical Significance
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Im JG, Han MC, Yeon KM, Ryoo JW, Park HS
- KMID: 2117277
- J Korean Radiol Soc.
- 1995 Dec;33(6):875-881.
PURPOSE: To analyze CT and follow-up chest radiographic findings in patients with necrotizing pneumonia and to evaluate clinical significance of the extent of necrosis. MATERIALS AND METHODS: We reviewed medical records and... -
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- Helical CT Finding of Carotid-Cavernous Fistula: A Sign of Early Enhancing Superior Ophthalmic Vein
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Kim JH, Na DG, Byun HS, Ryoo JW
- KMID: 2200658
- J Korean Radiol Soc.
- 2000 Aug;43(2):131-137.
- doi: 10.3348/jkrs.2000.43.2.131
PURPOSE: The purpose of this study was to determine the diagnostic value of a sign of early enhancing superior ophthalmic vein (SOV), as seen on helical CT images in patients... -
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- Glutathione S-transferases (GSTM1, GSTT1 and GSTP1) and N-acetyltransferase 2 Polymorphisms and the Risk of Gastric Cancer
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Hong SH, Kim JW, Kim HG, Park IK, Ryoo JW, Lee CH, Sohn YK, Lee JY
- KMID: 792400
- J Prev Med Public Health.
- 2006 Mar;39(2):135-140.
OBJECTIVES: Polymorphisms of genes from glutathione Stransferases (GSTs) and N-acetyltransferase 2 (NAT2) have been associated with increased susceptibility to various cancers. Previous results showed that East Asians such as... -
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- Functional MRI of Language: Difference of its Activated Areas and Lateralization according to the Input Modality
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Ryoo JW, Cho JM, Choi HC, Park MJ, Choi HY, Kim JE, Han H, Kim SS, Jeon YH, Khang HS
- KMID: 2000061
- J Korean Soc Magn Reson Med.
- 2011 Aug;15(2):130-138.
- doi: 10.13104/jksmrm.2011.15.2.130
PURPOSE: To compare fMRIs of visual and auditory word generation tasks, and to evaluate the difference of its activated areas and lateralization according to the mode of stimuli. MATERIALS AND METHODS:... -
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- Perfusion MR Imaging: Clinical Utility for the Differential Diagnosis of Various Brain Tumors
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Cho SK, Na DG, Ryoo JW, Roh HG, Moon CH, Byun HS, Kim JH
- KMID: 754059
- Korean J Radiol.
- 2002 Sep;3(3):171-179.
- doi: 10.3348/kjr.2002.3.3.171
OBJECTIVE: To determine the utility of perfusion MR imaging in the differential diagnosis of brain tumors. MATERIALS AND METHODS: Fifty-seven patients with pathologically proven brain tumors (21 high-grade gliomas, 8 low-grade... -
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- A Functional MR Imaging Study of Reading
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Ryoo JW, Na DG, Byun HS, Choe DS, Moon CH, Lee EJ, Chung WI
- KMID: 2099800
- J Korean Soc Magn Reson Med.
- 1999 Mar;3(1):78-83.
PURPOSE: To evaluate the language areas activated by fMRI during different reading tasks and to assess the difference of activated areas according to each reading task MATERIALS AND METHODS: Functional... -
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- Parallel Wire Balloon Angioplsty for Undilatable Venous Stenosis in Hemodialysis Fistula
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Shin TB, You JJ, Cho JM, Choi DS, Ryoo JW, Jeon KN, Na JB, Bae KS, Go US, Chung SH, Choi JS, Kim YJ
- KMID: 2024509
- J Korean Radiol Soc.
- 2007 May;56(5):451-456.
- doi: 10.3348/jkrs.2007.56.5.451
PURPOSE: The purpose of this study was to assess the value of the parallel wire balloon angioplasty technique for treating dysfunctional hemdialysis fistula with rigid stenosis, and this type of... -
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- Multidetector-Row CT Angiography of Cerebral Vasospasm after Aneurysmal Subarachnoid Hemorrhage: Comparison of Bone Subtraction and Standard CT Angiography with Digital Subtraction Angiography
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Lee YH, Choi DS, Ryoo JW, You JJ, Choi HC, Kim JE
- KMID: 2002932
- J Korean Soc Radiol.
- 2011 Oct;65(4):325-331.
- doi: 10.3348/jksr.2011.65.4.325
PURPOSE: To evaluate the usefulness of multidetector-row CT angiography (MDCTA) for the diagnosis of cerebral vasospasm after aneurysmal subarachnoid hemorrhage (SAH) by comparison of digital subtraction angiography (DSA) and to... -
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- Analysis of Enhancement Pattern of Sellar and Parasellar Tumors Using Two-Phase Helical CT
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Woo JY, Ryoo JW, Na DG, Roh HG, Byun HS
- KMID: 2117386
- J Korean Radiol Soc.
- 2002 Jan;46(1):9-15.
- doi: 10.3348/jkrs.2002.46.1.9
PURPOSE: To assess the enhancement patterns of sellar and parasellar tumors at two-phase helical CT. MATERIALS AND METHODS: Thirty-two patients with pathologically proven sellar and parasellar tumors [meningioma (n=17), pituitary... -
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- functional MRI of Language Area
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Ryoo JW, Na DG, Byun HS, Ro DW, Cho JM, Moon CH, Na DL, Chang KH
- KMID: 2099796
- J Korean Soc Magn Reson Med.
- 1999 Mar;3(1):53-59.
PURPOSE: To evaluate the usefulness of functional MR imaging(fMRI) for language mapping and determination of language lateralization. MATERIALS AND METHODS: Functional maps of the language area were obtained during word... -
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